For a site that is named 'OSNews', confusing the UI with the OS is a serious problem.

You could have said what you said with a single phrase:

"The more a web app looks like a native app the better".

Besides the UI though, the OS has little to do with the web. In fact, it is irrelevant. You could run a web app on a Commodore 64, provided that the interface is nicely looking and simple to use/understand.